PHP Interview Questions & Answers

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• Question 01 :- What is PHP?
• Question 02 :- Advantages of using PHP?
• Question 03 :- What are popular frameworks in PHP?
• Question 04 :- What are popular Content Management System (CMS) in PHP?
• Question 05 :- What is the difference between "echo" and "print" in PHP?
• Question 06 :- How a variable is declared in PHP?
• Question 07 :- What is the difference between $message and $$message?
• Question 08 :- How to write JavaScript in PHP?
• Question 09 :- How show Javascript alert with PHP variable?
• Question 10 :- What is the difference between JavaScript and PHP?
• Question 11 :- How to show PHP errors on the same page?
• Question 12 :- What is the most used method for hashing passwords in PHP?
• Question 13 :- What are the different types of Array in PHP?
• Question 14 :- What is the Purpose of @ in PHP?
• Question 15 :- What are the different types of variables present in PHP?
• Question 16 :- How does the 'foreach' loop work in PHP?
• Question 17 :- What is the use of session_start() and session_destroy() function in PHP?
• Question 18 :- What are the different ways of handling the result set of MySQLi in PHP?
• Question 19 :- What are magic constants in PHP?
• Question 20 :- What are the different loops in PHP?

• Question 21 :- Explain some of the PHP string functions?
• Question 22 :- How we can define a static function in class and what are uses?
• Question 23 :- What is the exact difference between explode and implode?
• Question 24 :- Difference between $_POSTand $_REQUEST?
• Question 25 :- How we can change the response header?

• Question 26 :- What are the steps to create a new database using MySQL and PHP?
• Question 27 :- What is htaccess ? Why do we use it and where?
• Question 28 :- Whare the constructor and destructor in PHP?
• Question 29 :- Is multiple inheritance is supported by PHP?
• Question 30 :- How to increase the execution time of PHP Script?

• Question 31 :- How to add 301 redirects in PHP?
• Question 32 :- Difference between include() and require() ?
• Question 33 :- What is the difference between "==" and "===" in PHP ?
• Question 34 :- How to register a variable in PHP Session ?

PHP Interview Questions - Part 5

• Question 35 :- What is the use of imagetypes() function?
• Question 36 :- Which method is used to check the data type of any variable?
• Question 37 :- Which method is used to count the total number of rows returned by any query?
• Question 38 :- Which function you can use to open a file from a folder?
• Question 39 :- Which function is used to delete a file from a folder?
• Question 40 :- What is the use of strip_tags() method?

PHP Interview Questions - Part 6

• Question 41 :- What is a Lambda function in PHP?
• Question 42 :- What is Overloading and Overriding in PHP?
• Question 43 :- What is the static variable in function useful for?
• Question 44 :- How can we define a variable accessible in functions of a PHP script?
• Question 45 :-How is a constant defined in a PHP script ?

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